Classical Physics

1001 Submissions

The Temperature of Radiation

Temperature as is formally defined in Thermodynamics just does not apply to radiation. Yet, as a
physical property it seems that radiation should have temperature. In this short note we define
the temperature of radiation and make plausible arguments that this definition is equivalent to
Kelvin temperature as defined in Thermodynamics.
Category:Classical Physics

Laser Ablation Requirements for Practical Acceleration to the Asteroid Belt, and Beyond. a Concepts in the Works Study

Authors:Andrew BeckwithComments: 5 pages, no figures. For evaluation of the new journal IJAI, as an elaboration of material
presented by the author in Scottsville, Az, in November 9 2009, at AIBEP.org biennial
meeting.

The rocket equation and the low exhaust velocity of chemical fuels are at the root of the high
cost of most NASA approved current inter planetary travel platforms. Laser boosting of space
crafts are a way about this problem If sails are used for travel to the asteroid belt and beyond
with incident laser beams providing acceleration, prior to interstellar power, the problem of
how to keep a constant laser power flux to the accelerating space craft necessitates a re
thinking of where to place lasers, i.e. the Lagrange points of the Earth-Moon system, as well
as batteries of lasers in the Lagrange points, for continual application of power for applying
sail drives . The conclusion, as outlined by the author, is that major development of stable
large scale lasers, far in excess of performances obtained for the MIRACL 3um laser are essential
for any practical development work taking place.
Category:Classical Physics

Gravitation and Electromagnetism

We propose an explanation of gravitation and electromagnetism by introducing information as a
new physical quantity. By defining it mathematically, the everyday meaning of the term "information"
is narrowed to a physical concept that has a specific sense. We start from the idea that a material object
manifests itself in space by emitting mass and energy less entities without geometrical dimensions, that
rush away with the speed of light carrying information about the position and the velocity of the emitter.
We call these entities "informatons" and show how they constitute the gravitational field of an
object, and - if it is electrically charged - its electromagnetic field. We investigate the analogy
gravitation-electromagnetism and the consequences for radiation and waves.
Category:Classical Physics